3781338528 has 48 divisors (see below), whose sum is σ = 10828381536. Its totient is φ = 1145859840.

The previous prime is 3781338503. The next prime is 3781338551. The reversal of 3781338528 is 8258331873.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1789351 + ... + 1791462.

It is an arithmetic number, because the mean of its divisors is an integer number (225591282).

Almost surely, 2^3781338528 is an apocalyptic number.

It is an amenable number.

3781338528 is an abundant number, since it is smaller than the sum of its proper divisors (7047043008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3781338528 is a wasteful number, since it uses less digits than its factorization.

3781338528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3580837 (or 3580829 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The square root of 3781338528 is about 61492.5892120343. The cubic root of 3781338528 is about 1557.9320791935.

The spelling of 3781338528 in words is "three billion, seven hundred eighty-one million, three hundred thirty-eight thousand, five hundred twenty-eight".